/*********************************************************************
 * Copyright (C) 2003 Andrew Khan
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * <p>
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 ***************************************************************************/

package jxl.biff;

import jxl.common.Logger;

/**
 * This class is a wrapper for a list of mappings between indices.
 * It is used when removing duplicate records and specifies the new
 * index for cells which have the duplicate format
 */
public final class IndexMapping {
    /**
     * The logger
     */
    private static Logger logger = Logger.getLogger(IndexMapping.class);

    /**
     * The array of new indexes for an old one
     */
    private int[] newIndices;

    /**
     * Constructor
     *
     * @param size the number of index numbers to be mapped
     */
    public IndexMapping(int size) {
        newIndices = new int[size];
    }

    /**
     * Sets a mapping
     * @param oldIndex the old index
     * @param newIndex the new index
     */
    public void setMapping(int oldIndex, int newIndex) {
        newIndices[oldIndex] = newIndex;
    }

    /**
     * Gets the new cell format index
     * @param oldIndex the existing index number
     * @return the new index number
     */
    public int getNewIndex(int oldIndex) {
        return newIndices[oldIndex];
    }
}
